Ejector



June 19, 1956 HANDFIELD EJECTOR Filed April 12, 1954 W 1 A W. I

m/0r. leapaldfiQlzzd/ield ziiwvmv/ A Vita/All lHlIHllHl ll United StatesPatent EJECTOR Lopold Handfield, Beloeil Station, Quebec, (IanadaApplication April 12, 1954, Serial No. 422,569

2 Claims. (Cl. 43-147) The present invention pertains to a novelejector, especially for discharging insecticide on trees and plants,spraying insecticide powder, feeding and fertilizing compositions,pollens, and similar materials.

The fluid ejection operation is commonly performed by a hand pump andhose. It has been found that the operator is often affected by toxicfumes, since he is close to the pump and to drainage down the hose.

The principal object of the invention is to overcome this difliculty byremoving the source of fumes from the operator. Another object is toprovide a relatively simple and inexpensive device for this purpose.

In the accomplishment of these objects, a propeller or fan is driven bya motor on an elevated platform. The propeller has a hollow hub, andeach blade is provided with a tube forming a longitudinal passage. Afluid or powder supply pipe leads to the interior of the hub andrequires no pumping of fluid or powder. As fluid or powder is dischargedfrom the tubes by centrifugal force, the suction thus created drawsfluid or powder from the source to maintain the hub filled. Thepropellers are also pivotally mounted in order to eject in anydirection.

The invention is fully disclosed by way of example in the followingdescription and in the accompanying drawings in which:

Figure 1 is a side elevation of the device partly in section;

Figure 2 is an enlarged section, partly in elevation;

Figure 3 is a vertical section at the tip of a blade; and

Figure 4 is a detail section of the nozzle.

Reference to these views will now be made by use of like characterswhich are employed to designate corresponding parts throughout.

In Figure l is shown a turntable platform 1 which is preferablysupported in an elevated position and may be carried on a truck. A motorplatform 2 is pivotally supported on the platform 1 by brackets 3 and inturn supports a suitable motor 4. The shaft 5 of the motor is supportedin bearings 6 in a riser 7 on platform 2. A sleeve 8 extends from theriser and receives a hub 9 carried by shaft 5. A sealing plate 10 on theshaft is spaced from the hub 9, and both are sealed in the sleeve byrings 11.

The space between the hub 9 and plate 10 forms a chamber 12 for aninsecticide supplied from a suitable reservoir through a pipe 13.

Patented June 19, 1956 Propeller blades 14, each having an outer face14a, extend from the hub 9. In each blade is mounted a longi tudinaltube 15 communicating with the chamber 12. At the outer end of each tubeis fitted a nozzle 16 having a laterally or forwardly facing flaredoutlet port extending from a restricted portion 17, 17. As the propelleris rotated, it is evident that centrifugal force and suction draw fluidor powder through the pipe 13 and tubes 15 and discharge it through theoutlets 17.

In this manner, trees or fields are sprayed with insecticide. No pumpsare required and therefore the operator is not exposed to the toxiceffects of the fluid or powder. Moreover, the fluid or powder is blownaway from the operator and is expanded by the shape of the outlets 17.The propeller is enclosed in a screen cage 18.

An hydraulic cylinder 20 with intake pipe 21 is mounted on theplatform 1. The piston rod 22 is pivoted to a pair of toggle links 23which are respectively pivoted to the platforms 1 and 2. Thus, byoperation of the piston in cylinder 20 the slope of platform 2 and shaft5 may be adjusted at the pivoted brackets 3.

Although a specific embodiment of the invention has been illustrated anddescribed, it will be understood that various alterations in the detailsof construction may be made without departing from the scope of theinvention as indicated by the appended claims.

What I claim is:

1. An ejector comprising a shaft, a hollow hub thereon, an inlet meansfor said hub adapted to afford entrance of powder or fluid into theinterior of said hub, propeller blades extending from said hub, eachpropeller blade having an outer face, a longitudinal tube in each bladecommunicating with the interior of said hub, the outer end of each tubebeing disposed in the outer face of the corresponding blade and beingopen to the atmosphere, and a motor for driving said shaft.

2. An ejector comprising a shaft, a hollow hub thereon, an inlet meansfor said hub adapted to afford entrance of powder or fluid into theinterior of said hub, propeller blades extending from said hub, eachpropeller blade having an outer face, a longitudinal tube in each bladecommunicating with the interior of said hub, a nozzle in the outer endof each tube and disposed in the outer face of the corresponding blade,said nozzle having a restricted portion, and a flared portion which isexternally disposed with respect to said restricted portion, and a motorfor driving said shaft.

References Cited in the file of this patent UNITED STATES PATENTS1,562,251 Pelton Nov. 17, 1925 2,512,782 Strickland June 27, 19502,613,109 Walker Oct. 7, 1952 2,659,556 Doblehoff Nov. 17, 19532,716,306 Lear Aug. 30, 1955 FOREIGN PATENTS 400,071 Great Britain Oct.10, 1933 1,034,842 France Apr. 15, 1953

